https://github.com/amandasaurus/django-cache-by-user

Make your django site share a cache for all anonymous users, increasing cache hits
https://github.com/amandasaurus/django-cache-by-user

Last synced: 4 months ago
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Make your django site share a cache for all anonymous users, increasing cache hits

• Host: GitHub
• URL: https://github.com/amandasaurus/django-cache-by-user
• Owner: amandasaurus
• License: gpl-3.0
• Created: 2014-06-18T14:58:29.000Z (about 11 years ago)
• Default Branch: master
• Last Pushed: 2014-08-08T09:05:59.000Z (almost 11 years ago)
• Last Synced: 2024-12-27T00:24:39.348Z (6 months ago)
• Language: Python
• Size: 217 KB
• Stars: 1
• Watchers: 2
• Forks: 3
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
django-cache-by-user

====================

Make your django site share a cache for all anonymous users, increasing cache

hits, increasing page load time, reducing CPU load.

When using [Django's per view cache](), the session middleware will add ``Vary:

Cookie`` so that cached pages will not be shared between users. Nearly all the

time this is what you want. However if you have a popular webpage that is often

visited by non-logged in users, and you want to cache it, you have a problem.

Every different anonymous user will cause a cache hit.

By using ``django-cache-by-user``, you can share the cache for a page between anonymous users.

Installation

============

    pip install django-cache-by-user

Add it as a middleware:

    MIDDLEWARE_CLASSES = ( 

        ….

        'cache_by_user.middleware.AddUserIDHashMiddleware',

        …

    )

Usage

=====

Every response will now have a ``X-UserIDHash``

header. All anonymous users will have the same value, all logged in users will

have a different value based on their userid.

The value is hashed and based on the userid and your ``SECRET_KEY`` setting.

Neither your ``SECRET_KEY`` nor user ids are revealed though.

It adds ``X-UserIDHash`` to the ``Vary`` header of the response. To get the real benefit you need to use [django-dont-vary-on](https://github.com/rory/django-dont-vary-on) to remove ``Cookie`` from the Vary header.

    @dont_vary_on("Cookie")

    def my_view_with_anonymous(request):

        ...